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    4 Side Effects Of Eating Too Much Vitamin C

    Vitamin C, an essential nutrient, is found abundantly in many fruits and vegetables. It is important to get enough vitamin C to maintain a healthy immune system, offering many health benefits. People take vitamin C supplements because they claim that supplements have more amount of vitamins than foods. But are there any side effects of eating too much vitamin C?

    Vitamin C is responsible for lower blood pressure, flighting inflammation, healing wound, enhancing brain function, keeping the bones healthy, and producing collagen. Vitamin C is a water-soluble vitamin, and unlike other fat-soluble vitamins, it does not get stored in the body. Vitamin C dissolves in water; it is transported to body tissues, and extra gets excreted through urine.

    The body doesn’t produce its own vitamin C, so consuming vitamin C rich food daily is necessary. However, supplements with a high amount of vitamin C can affect the body adversely. Extra vitamin C isn’t absorbed and irritates the gastrointestinal tract, which causes side effects and symptoms like diarrhea, bloating, nausea, abdominal discomfort, and stomach cramping.

    How Much Vitamin C Is ‘Too Much’?

    How Much Vitamin C Is 'Too Much'?
    Source: Healthline

    People with a normal diet can’t get too much vitamin C as it is water-soluble, and extra gets excreted through urine. The risk of overdose is higher for the people who take vitamin C supplements.

    For the people 19 years and above, they should not exceed 2000 milligrams of vitamin C intake. This limit is common for females, males, pregnant, or even breastfeeding females. 1800 milligrams for teenagers and 1200 milligrams for 13 years of age children and below vitamin C is harmful.

    Side Effects Of Eating Too Much Vitamin C

    1. Digestive Problems

    Digestive Problems
    Source: Be Balanced Healing

    Too much vitamin C can cause digestive symptoms, and digestive problems are the commonest side effect. Ingesting more than 2000 milligrams of vitamin C per day will lead to gastrointestinal tract irritation. The most common digestive symptoms are diarrhea and nausea. Acid reflux can also result after consuming excessive vitamin C. If you experience digestive distress, cut off the supplement dose and avoid vitamin C supplements.

    2. Iron Overload

    Iron Overload
    Source: Medical News Today

    Vitamin C enhances iron absorption. Non-heme iron found in plant-based products is not absorbed effectively as the heme iron found in animal-based products by our body. Vitamin C binds with the non-heme iron and makes it easier for the body to absorb it. Non-heme iron is important for the people who get their iron from plant-based foods. The risk of iron overload increases when one takes 100 milligrams of vitamin C per day. Hemochromatosis is a condition when too much iron builds up in the body. People with such conditions should be cautious with vitamin C supplements.

    3. Kidney Stones

    Kidney Stones
    Source: Johns Hopkins Medicine

    The excessive vitamin C supplementation intake leads to oxalate and uric acid excretion via urine. This compound leads to kidney stones formation as the oxalate binds with minerals and forms crystals that result in kidney stones formation. Studies say that if a person takes 2000 milligrams of vitamin C daily for a week, then the amount of oxalate excreted increases by 20%.

    4. Bone Spurs

    Bone Spurs
    Source: Azalea Orthopedics

    Bone spurs are bony projections developed along the bone edges, mostly in the joints. People with high vitamin C levels are likely to develop painful bone spurs. Also, a low level of vitamin C can cause painful inflammation in joints, i.e., rheumatoid arthritis. It emphasizes the intake of vitamin C supplements in an appropriate amount.


    Vitamin C is usually safe for most people. Intaking 2000 milligrams of vitamin C is impossible if you are on a normal diet. One needs to consume 30 oranges and 15 red peppers in a day for overdosing vitamin C. Indeed, people can take supplements. The risk of over-consumption of vitamin C can cause digestive symptoms. But kidney stones and iron overload are one of the prominent side effects of eating too much vitamin C.

    You can minimize overdose risk by taking approximately 90 milligrams and 75 milligrams of vitamin C per day for men or women, respectively. Most people don’t have to take vitamin C supplements, as eating fresh fruits and vegetables is enough for completing the daily requirement. Unless you have vitamin C deficiency, don’t opt for supplements and consult the doctor before taking them.

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